Fire extinguisher



May 29, 1934- J. LINCOLN 1,960,384

FIRE EXTINGUISHER Attm'ney May 29, 1934- J. LlNcoLN 1,960,384

FIRE EXT INGUI SHER Filed Feb. 19, 1934 3 Sheets-Sheet 2 Inventar Jamzzcolw,

Attorney May 29 1934 J. LINCOLN FIRE EXTINGUISHER -3 snets-sneet :s

Filed Feb. 19, 1934 Inventor Jaa/ anaal/a,

Attomey Aio Patented May 29, 1934 UNITED STATES PATENT OFFICE 2 Claims.

The present invention relates to new and useful improvements in fireextinguishers particularly for motion picture projecting machines andhas i'or its primary object to provide, in a manner as hereinafter setforth, a novel construction, combination and arrangement of parts forexpeditiously extinguishing a nre in either or both of the magazines ofthe machine.

Another very important object of the invention is to provide a iireextinguishing apparatus of the aforementioned character embodying novelmeans for automatically closing and maintaining in closed position thedoors of the magazines.

Other objects of the invention are to provide a `fire extinguisher formotion picture projecting machines which will be comparatively simple inconstruction, strong, durable, highly eiicient and reliable inoperation, compact and which may be manufactured and installed at lowcost.

All of the foregoing and still further objects and advantages of theinvention will become apparent from a study of the followingspecification, taken in connection with the accompanying drawingswherein like characters of reference designate corresponding partsthroughout the several views, and wherein:-

Figure 1 is a view in side elevation, showing the upper and lowermagazines of a motion picture projecting machine equipped with a fireextinguishing apparatus in accordance with the present invention.

Figure 2 is a plan View, showing the means for automatically closing themagazine doors.

Figure 3 is a View in horizontal section, taken substantially on theline 3 3 of Figure 1 but showing the magazine door in open position.

Figure 4 is a vertical sectional View, taken substantially on the line 44 of Figure 3.

Figure 5 is a fragmentary view in bottom plan of a portion of thedischarge pipe which is mounted in the upper magazine.

Figure 6 is a detail view in top plan of the discharge pipe which ismounted in the lower magazine.

Referring now to the drawings in detail, it will be seen that thereference numeral 1 designates generally the usual head of a motionpicture projecting machine above which is mounted the upper magazine 2and below which is mounted the lower magazine 3. The doors 4 of themagazines 2 and 3 are secured in position through the medium of hinges5, the portion of each hinge 5 to which the doors are secured havingfixed thereon a cam 6 the purpose of which will be presently set forth.

Mounted transversely on the fronts of the magazines 2 and 3, adjacentthe hinges 5, are horizontal cylinders V'7 having connected to one endthereof fluid supply pipes 8 from a suitable source. The supply pipes 8are to be controlled by suitable valves (not shown) located at aconvenient point in the booth. Rods 9 extend slidably into the cylinders'l through the other ends thereof and have xed on their inner endspistons 10. Rollers 11 are journaled on the outer ends of the pistonrods 9 for operative engagement with the cams 6.

The cylinders 'l are mounted in position through the medium of laterallyprojecting nipples 12 which extend into the magazines 2 and 3. 70Mounted in the upper portion of the magazine 2 and connected to thecorresponding nipple 12 is an endless, perforated discharge pipe 13which, as best seen in Figure 1 of the drawings, is arcuate in sideelevation to conform to the curvature of the magazine. A perforateddischarge pipe 14 is mounted in the lower magazine 3, said dischargepipe 14 having a gap 15 therein for the passage of the nlm into saidlower magazine.

Attention is here invited to the fact that the ports 16 in the cylinders7 provided by the nipples 12 are controlled by the pistons 10. Inoperation, should a lire occur in either or both of the magazines 2 and3 the valves in the supply pipes 8 are opened for admitting fluid underpressure to the cylinders 7. When the iiuid enters the cylinders 7 thepistons 10 are actuated thereby in a direction to close the magazinedoors 4, said pistons being moved past the outlet ports 16 provided bythe nipples 12 for permitting the extinguishing fluid to enter theperforated pipes 14 and 15 to be discharged into the magazines. Shouldthe doors 4 be forced open by explosions in the magazines or from anyother cause, said doors will be immediately closed again by the fluidpressure in the cylinders 7, as is believed to be apparent. In Figure 1of the drawings the front wall of the booth is designated by thereference numeral 17.

It is believed that the many advantages of a fire extinguisherconstructed in accordance with the present invention will be readilyunderstood, and although a preferred embodiment of the invention is asillustrated and described, it is to be understood that changes in thedetails of corrstruction and in the combination and arrangement of partsmay be resorted to which will fall within the scope of the invention asclaimed.

What is claimed is:-

1. In combination with an enclosure including sure, Huid discharge meansin the enclosure andI communicating with the cylinder for receivingfluid therefrom, a fluid actuated piston in the cylinder controlling theflow of the fluid to the d'ischarge means, and?` means operativelyconnecting the door to the piston for actuation to closed positionthereby, the last-named means including a cam fixed to the door, a rodextending slidably into the cylinder and connected to the piston, and aroller journaled on the rod and operatively engaged with: the cam,

JACK LINCOLN.

